06 300c 5.7 hemi performance
 

I'm looking to find out what parts I can add to add horsepower for lower than $3,000 I already know about the MDS delete and maybe a cam. What other heads will fit on the 5.7s? Intakes? Cams? Crankshaft? Etc.... putting alot of work into this car so all comments will help TIA

How many miles on the engine?
Some upgrades are really hard on the bottom end, so if the car is over 100,000 miles, you may want to consider rebuilding the bottom end first or try not to overdo the upgrades and risk blowing the engine.

A diablo tuner is the best place to start because you can get custom tunes that can improve on other performance mods.
You can also use it to just flat out turn off the MDS system.